6NK8

C-terminal region of the Burkholderia pseudomallei OLD protein

External Resource: Annotation


Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
AF_UNCLASSIFIEDe6nk8A2 A: alpha arraysX: Helical domain in class 2 OLD protein (From Topology)H: Helical domain in class 2 OLD protein (From Topology)T: Helical domain in class 2 OLD proteinF: F_UNCLASSIFIEDECOD (1.6)
APF20469e6nk8A1 A: a/b three-layered sandwichesX: HAD domain-likeH: HAD domain-relatedT: Toprim domainF: PF20469ECOD (1.6)
BF_UNCLASSIFIEDe6nk8B2 A: alpha arraysX: Helical domain in class 2 OLD protein (From Topology)H: Helical domain in class 2 OLD protein (From Topology)T: Helical domain in class 2 OLD proteinF: F_UNCLASSIFIEDECOD (1.6)
BPF20469e6nk8B1 A: a/b three-layered sandwichesX: HAD domain-likeH: HAD domain-relatedT: Toprim domainF: PF20469ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A, B
PF20469Overcoming lysogenization defect protein-like, TOPRIM domain (OLD-like_TOPRIM)Overcoming lysogenization defect protein-like, TOPRIM domainThis entry represents the topoisomerase-primase (TOPRIM) nucleotidyl transferase/hydrolase domain found in bacterial and archaeal nucleases of the OLD (overcome lysogenization defect) family. The bacteriophage P2 OLD protein, which has DNase as well ...This entry represents the topoisomerase-primase (TOPRIM) nucleotidyl transferase/hydrolase domain found in bacterial and archaeal nucleases of the OLD (overcome lysogenization defect) family. The bacteriophage P2 OLD protein, which has DNase as well as RNase activity [1,2] consists of an N-terminal ABC-type ATPase domain and a C-terminal Toprim domain. The nuclease activity of OLD is stimulated by ATP, though the ATPase activity is not DNA-dependent. The TOPRIM domain has two conserved motifs, one of which centres at a conserved glutamate and the other one at two conserved aspartates (DxD). The conserved glutamate may act as a general acid in strand cleavage by nucleases. The DXD motif may co-ordinate Mg2+, a cofactor required for full catalytic function [3].
Domain